Shuttle-locking mechanism.



PATENTED SEPT. 18, 1904.

J. P. JOHNSON.

SHUTTLE LOOKING MECHANISM.

APPLIGATION FILED AUG. 22, 1903.

NO MODEL.

UNITED STATES PATENT Patented September 13, 1904.

FFIQE.

JOSHUA P. JOHNSON, OF BRUNSWICK, MAINE, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE DRAPER COMPANY, OF HOPEDALE, MASSA- OHUSETTS, A CORPORATION OF MAINE.

SHUTTLE-LOCKING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 769,801, dated September 13, 1904.

Application filed August 22, 1903. Serial No. 170,471. (No modelfl To all whom it may concern:

Be it known that I, JOSHUA P. JOHNSON, a citizen of the United States of America, and a resident of Brunswick, county of Cumberland, State of Maine, have invented certain new and useful Improvements in Shuttle Locking Mechanism, of which the following is a specification.

In a loom when the shuttle has been driven across the lay and into the box the tip of the shuttle strikes the picker and forces it and the picker-stick to which it is attached back toward the end of the slot in the lay. If the shuttle is not checked in its course properly, it is likely to rebound more or less, and as the rebounding of the shuttle is not always of the same amount it follows that the shuttle while it is waiting in the box before it is driven back again to the other end of the lay does not remain in the same position at each pick Of the loom.

The varying position of the shuttle is particularly objectionable in a loom in which the filling in the shuttle is changed automatically while the shuttle is waiting in the box. It is evident that in such a loom ,if the shuttle is not in the proper position when the bobbins are changed breakages of the changing parts or of the bobbin carrying the filling or even of the shuttle itself are likely to occur.

The purpose of this invention is to check the motion of the shuttle easily and hold it in the box at practically the same place each time.

- To this end my invention consists of an improved locking device for loom-shuttles embodying novel features of construction and combination of parts, substantially as disclosed herein.

I illustrate my invention in the accompanying drawings, in which Figure 1 is a top View of the box with the shuttle in place. Fig. 2 is a plan of the binder with portion in section. Fig. 3 is an elevation of the binder, showing some of the adjacent parts; and Fig. I shows a modification of the binder.

A represents the end of the lay. O is the shuttle; B, the front box-plate, and E the rear box-plate; P, the picker-stick; H, the picker, and la the protection-rod finger. These are all common and well-known parts of a loom and need no further description.

' The binder F is pivoted beneath the rear box-plate E by means of a pivot f at or near its outer end. The binder, as shown in Figs. 1, 2, and 8, is made up of two parts-the binder proper and an extension f, connected to the binder proper by a spring connection. As here shown, the connection is made by a flat spring f, secured by screws to the binder proper and to the extension, so that the extension can have a limited outward lateral motion independent of the binder proper, which motion will tend to press the binder proper inward at its other end by the action of the spring. Thus when the extension f is pressed outward the binder proper is pressed inward against the side of the shuttle. The extension is pressed laterally outward by the action of the picker, and to effect this motion the extension f is formed with an inclined surface which extends laterally into the path of the picker mechanism, the inclined surface being so formed that when the picker is forced back it strikes the inclined surface and presses it outward, pressing the binder proper inward at the same time. The inner face of the binder and the extension is preferably lined with leather 6 to prevent undue wear of the shuttle.

Means are provided by which the extension of the spring f may be increased or decreased and the push of the binder against the side of the shuttle correspondingly varied. For this purpose I secure a bolt g in the rear side of the binder, passing it through a hole in the spring. A spiral spring adjusted as to tension by nuts g presses against the spring f and tends to stiffen its action.

The action of the binder is as follows: As the shuttle is driven into the box the binder is pressed outward sufficiently to allow the protection-rod finger to act as usual, and the consequent friction with the binder partially checks the shuttle. As the shuttle strikes the picker (which is normally as shown by dotted lines) it drives the picker backward to the end of the lay and causes it to come in contact with the inclined surface of the extension end f of the binder and pressing it outward causes the binder to move inward and to grip the side of the shuttle, holding it firmly in place and preventing any rebound of the shuttle. As soon as the picker starts to throw the shuttle back the grip of the binder immediately relaxes and the shuttle is free to slide easily out of the box. As a result of this construction the front box-plate may be moved out, leaving a little friction on the shuttle until it reaches the end of its travel and forces the picker back. The loom will thus run more easily, requiring less power, and the shuttle will'at-each pickof the loom be locked in the same position.

Many modifications may be made while keeping within the terms of my invention.

- One of them is shown in Fig. 4:, where A represents the binder-,0 is the leather facing, and a is, the spring which is on the inside of the binderand'is so formed that it forms in itself the inclined surface, giving a-yielding mo- .tion when struck by the picker and forcing 3Q ward against the shuttle.

the binder to turn on its pivot and press in- 1 claim- 1. The herein-described locking device for loom-shuttles, consisting ofa binder pivoted between its ends in the side of the shuttle-box,

the outer end of said binder having an inclined surface extendinglaterally into the path of and in the rear of the picker mechanism and adapted to be struck thereby to press said binder against the side of the-shuttle,

and means for causing the inclined surface to yield independently on the body of the binder, as set forth. 7

-:2. The herein-described locking device for loom-shuttles consisting of a binder pivoted between its ends in the side of the shuttle-box, the-end of said binder having an inclined surface extending laterally into and in rear of the picker mechanism and spring mechanism connecting the portion carrying said inclined surface with the body of the binder.

3. The herein-described locking device for loom-shuttles consisting of a binder pivoted between its ends in the side of the shuttle-box, the end of said binder being provided with an extension having an inclined surface extending laterally into the path of and in rear of the picker mechanism, and spring mechanism connecting said extension to the binder proper.

4. The herein-described locking device for loom-shuttles consisting of a binder pivoted between its ends in the side of the shuttle-box, the end of said binder being provided with an extension having an inclined surface extending laterally into the path of and in rear of the picker mechanism, and a flat spring connecting said extension withithe binder proper.

5. The herein-described locking device for loom-shuttles consisting of a binder pivoted between its ends in the sideof the shuttle-box, the end of said binder being provided with an extension having an inclined surface, extending laterally into the path of and in rear-of the picker mechanism, a flat spring secured to said extension and to the binder proper and an adjusting device for! regulating the stiffness of said spring.

-6. The herein-described locking device for loom-shuttles consisting of a binder pivoted between its ends in the sideoftheshuttle-box, the end of saidbinder being providediwitlran extension having an inclined surface extending laterally into the path of and in rear of the picker mechanism, a flat spring securedto said extension-and to the binder proper, a bolt secured in the binder proper and extending through saidspri-ng, aspiral-springsurrounding-said boltand adaptedto pressagainst said flat spring to increase its tension and adjusting-nuts for said spiral spring.

Signed at Brunswick this 15th dayof August, 11903.

I JOSHUA P. JOHNSON. Witnesses:

RUSSELL EATON, BARRETT PoTTER. 

